Editorial Policy
How ToolsHub tools are built, tested, and kept accurate. Last reviewed .
How tools are built
Every tool on ToolsHub is built by the ToolsHub engineering team against a written specification that defines its formula or algorithm, its inputs and limits, and its expected results. Calculators and converters use published, citable sources: unit definitions follow the International System of Units (SI) and NIST conversion factors, financial formulas follow standard amortization and compound-interest mathematics, and health calculators implement peer-reviewed equations (e.g. Mifflin-St Jeor for BMR, WHO/CDC reference ranges for BMI) with their sources named on the page.
How tools are tested
Each tool ships with automated unit tests that pin its results to known-correct values, plus interaction tests that exercise the interface the way a person would. The full test suite — several thousand assertions across every live tool — runs on every single code change, and a change that breaks any tool's accuracy cannot be published. We also verify accessibility (WCAG AA), performance (Core Web Vitals), and that client-side tools genuinely never transmit your data.
Review and freshness
Tool pages display an “Updated” date that reflects the last time the tool's content or logic actually changed — not an artificial timestamp. Reference data with a shelf life (currency exchange rates, prayer times, DNS results) is fetched live or on a short cache so it is current when you use it, and pages state when their data was last refreshed.
Scope and limits of our content
Our finance, health, insurance, and legal-adjacent tools are educational estimators. They show you how standard formulas behave with your numbers — they do not constitute financial, medical, tax, or legal advice, and they cannot account for your personal circumstances. For decisions in these areas, consult a qualified professional. Every such tool carries a disclaimer linking back to this policy.
Corrections
If you find an inaccurate result, a wrong formula, or outdated reference data, please contact us. Verified accuracy issues are prioritised ahead of all other work: we reproduce the report with a failing test, fix the logic, and ship the correction — typically within days. The page's “Updated” date changes whenever a correction lands.
Independence and monetisation
ToolsHub is funded by clearly-labelled advertising. Advertisers have no influence over tool results, rankings, or editorial content — a calculator's output is determined by its published formula and nothing else. We do not accept payment to alter results, and we do not sell user data. See our Privacy Policy for what little data we collect.
Who is behind the tools
Tools are designed, implemented, and reviewed by the ToolsHub Editorial Team — software engineers who specialise in browser-based computation. We deliberately do not attribute tools to invented personas: accountability sits with the team and this published policy. Learn more about ToolsHub.